共 52 条
Promising candidate for thermal management: Thermophysical and mechanical properties of h-BN/polyurea@n-eicosane phase change microcapsules
被引:1
作者:

Hu, Jianfeng
论文数: 0 引用数: 0
h-index: 0
机构:
South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China

He, Jianbin
论文数: 0 引用数: 0
h-index: 0
机构:
South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China

He, Yanping
论文数: 0 引用数: 0
h-index: 0
机构:
Kunming Univ Sci & Technol, Sch Chem Engn, Chenggong Campus, Kunming 650504, Yunnan, Peoples R China South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China

Fang, Xiaoming
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h-index: 0
机构:
South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China

Zhang, Zhengguo
论文数: 0 引用数: 0
h-index: 0
机构:
South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China
机构:
[1] South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China
[2] Kunming Univ Sci & Technol, Sch Chem Engn, Chenggong Campus, Kunming 650504, Yunnan, Peoples R China
关键词:
Phase change material;
Microcapsule;
Thermophysical properties;
Mechanical properties;
Thermal management;
SHELL;
FABRICATION;
D O I:
10.1016/j.solmat.2024.113310
中图分类号:
TE [石油、天然气工业];
TK [能源与动力工程];
学科分类号:
0807 ;
0820 ;
摘要:
Encapsulated phase change materials (MPCMs) can be used to address thermal runaway issues in electronic devices and battery systems in small spaces or flexible requirements. In this work, polyurea microcapsules incorporating h-BN and encapsulating n-eicosane were successfully synthesized. The h-BN was embedded to enhance the microcapsules' thermal conductivity. Comprehensive characterizations revealed that the microcapsules' area change rates before and after phase transition were approximately 3 %. Among the various microcapsules, h/MC-2 exhibited the best performance, with an enthalpy value of 184.37 J/g, an encapsulation efficiency of 79.72 %, and a high thermal storage efficiency of up to 99 %. Moreover, the thermal conductivity coefficient increased by 51.24 % to 0.3297 W/(m & sdot;K) due to the addition of h-BN. Mechanical properties testing was conducted on individual h/MC-2 microcapsules, revealing an average nominal rupture tension of 46.31 +/- 2.09 N/m and an average Young's modulus of 0.17 +/- 0.01 GPa. Furthermore, the h/MC-2 microcapsules were combined with silicone gel to prepare composites, incorporating h-BN to enhance thermal conductivity. The composites were found to reduce the simulative chip temperature by 15.90 %, demonstrating their potential application in thermal management.
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